If an object is placed symmetrically between two plane mirrors, inclined at angle of 72 degree, then total no. of images formed:
Anonymous Quiz
18%
5
30%
4
23%
3
17%
2
11%
None
π8π₯6π1π₯°1
π8π₯6π3π₯°2π2
An image of an object produced on a screen which is about 36 cm using a convex lens. The image produced is about 3 times the size of the object. What is the size of the object?
Anonymous Quiz
44%
12 cm
34%
33 cm
16%
34cm
5%
21cm
π8π2
A student conducts an experiment using a convex lens. He places the object at a distance of 60 cm in front of the lens and observes that the image is formed at a distance of 30 cm behind the lens. What is the power of the lens?
Anonymous Quiz
34%
0.5
34%
0.005
24%
0.000005
8%
5
π5π₯3π2π€1
A 10 mm long awl pin is placed vertically in front pin is formed at 30cm in front of the mirror. The focal length of this mirror is:
Anonymous Quiz
33%
-30
38%
-20
18%
-40
10%
None
π5π₯4π1
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If you are in class 9 or 10 then please read the complete msg.
I am taking live batches for youπ«΅
---------------------------
π Class 9 MH board - VICTORY BATCH
π΄ Subjects - Social Study | English | Maths | Science
π΄ For Semi - medium and English Medium
π΄ There are different teachers for each and every subject
β° Time - 9 pm onwards
Link - https://wygei.courses.store/263621
---------------------------
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π΄ For Semi - medium and English Medium
π΄ There are different teachers for each and every subject
β° Time - 9 pm onwards
Link - https://wygei.courses.store/253057
---------------------------
π’ Our Batch Features
β Live Classes With a Proper Schedule
β Regular Doubt Clearing Session
β Structured Objective Test From Each And Every Topic
β Subjective Test As Per Board Guidelines
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π23π2π1π₯1
Aqua regia is a freshly prepared mixture of concentrated HNO3 and concentrated HCl in the ratio of
Anonymous Quiz
61%
1:3
24%
2:3
11%
3:2
4%
4:1
π6π₯3
When a few drops of iodine solution are added to rice water, the solution turns blue- black in colour. This indicates that rice water contains:
Anonymous Quiz
18%
Fat
28%
Protien
48%
Starch
5%
None
π₯3π₯°2π1
What is the percentage of the oxygen in the expired air when a person is resting?
Anonymous Quiz
26%
12
34%
16
28%
24
11%
21
π6π±3π₯1π1
Work of 14 J is done to move 2 C charge between two points on a conducting wire. What is the potential difference between the two points?
Anonymous Quiz
28%
28v
32%
14v
37%
7v
4%
None
π5π4π2
In an electrical circuit two resistors of 2 Ξ© and 4 Ξ©, respectively are connected in series to a 6 V battery. The heat dissipated by the 4 Ξ© resistor in 5 s will be
Anonymous Quiz
21%
5j
39%
10j
33%
20j
7%
45j
π7β€3π1π1
The poorest conductor of heat among metals is
Anonymous Quiz
36%
Lead
32%
Mercury
21%
Calcium
11%
Sodium
π11π2β€1π₯1
The most abundant metal in the earthβs crust is
Anonymous Quiz
34%
Iron
50%
Aluminium
11%
Sodium
4%
Calcium
π8π2
The electronic configuration of three elements X, Y and Z are as follows:
X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write the correct formula,
X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write the correct formula,
Anonymous Quiz
16%
Xy
52%
Yz
24%
X2Y
8%
None
π9π₯°2π₯1